Off-Road.com's Ride-Net! New and Improved! 2002 KTM 50 SX Pro Junior L/C

Quality, Performance, and Innovation

Feb. 01, 2002 By ORC STAFF
» 2002 KTM 50 SX Pro Junior L/C
200 E/XC
250 E/XC
300 E/XC
380 E/XC
400 E/XC
520 E/XC

Differences from the 50 SX Pro Senior L/C:

  • Lower seat height
  • Shorter wheelbase.
  • Smaller 14mm Dell Orto carburetor.
  • Shorter suspension travel but using the same updated frame as the 50 L/C.
  • WP rear shock
    • Progressive spring
    • External, adjustable rebound damping
  • 2001 50 SR L/C cylinder
  • Front Hydraulic Disc Brake
  • Rated at 11 horse power

Suspension:
Marzocchi Front Forks

  • New triple clamps. New steering stem bolt instead of a nut, like the large motorcycles.

Paioli Rear Shock

  • Progressive spring

Chassis:
New 50 L/C chassis design and body work

Swingarm

  • Chain guide is now like the large motorcycle design.

Handlebar

  • Adjustable position handlebar clamps like the large motorcycles.

Silencer

  • Just like the 50 L/C model with removable end cap.

Body Work/Seat/Fuel tank

  • Just like the 50 L/C graphics that model the changes in the large motorcycles.

Specifications:

50 SX PRO Junior LC
ENGINE single cylinder, 2-stroke
Displacement 49 cc
Bore x stroke 39.5 / 40 mm
Starter Kick-starter
Fuel Premium Fuel (92 + U.S. Octane),
2-Stroke Premix Oil @ 32:1
Carburetor Dell'Orto PHVA 14 DS
Engine lubrication mixture lubrication
Transmission lubrication 80/90 wt.
Primary ratio 16:57
Final drive 1/2 x 3/16" 96 pins
Cooling liquid cooled
Clutch centrifugal clutch (adjustable)
Ignition Selettra analog
Spark plug NGK BR 10 EG
CHASSIS
Frame central double-cradle-type frame
Subframe -
Handlebar Aluminum
Front suspension Marzocchi Ø 32 mm
Rear suspension WP monoshock
Suspension travel front / rear 135 mm/5.3 inches - 200 mm/7.9 inches
Front brake hydraulic disk brake 160 mm/6.3 inches
Rear brake 90mm/3.5" Internal Expanding,
Single/Cam Drum
Front / rear rim 1.6 x 10"; 1.6 x 10" Alu
Front / rear tire 2.50 x 10" Pirelli MT 32; 2.75 x 10" Pirelli MT 32
Transmission ratio 11:48
Main silencer aluminum
Steering head angle 27°
Wheel base 910 mm/36 inches
Ground clearance (unladened) 220 mm/8.7 inches
Seat height 585 or 610 mm/23 or 24 inches (adjustable)
Fuel capacity appox. 1.8 liters / 0.46 U.S. gallons
Weight approx. 39 kgs / 86 lbs.


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